22 first-class construction engineer metal and electrical engineering golden test point installation technology of tower equipment, first-built academic master notes, long press and like + forward + evaluation continue to be updated, click on my avatar on the Wendang version and send a private message to me: 2022
test point 1: tower tool Installation technology
(2) Product welding test piece
1) Product welding test plate must be prepared on-site welding of towers (hereinafter referred to as test plate)
2) The test plate material should have the same standards, same grade, same thickness and same as the tower materials. The test items of the test plate include at least tensile test, bending test, and impact test. Re-inspection should be carried out for unqualified items.
[Example 1·Multiple choice question] The test items on the test board include at least (). A. Tensile test
B. Bending test
C. hardness test
D. Chemical analysis test
E. Impact test
[Answer] ABE
Test point 2: Hydraulic pressure test
(1) Qualification criteria:
① No leakage;
② No visible deformation ;
③No abnormal sound during the test. For steel towers with a lower limit of tensile strength with a lower limit of more than or equal to 540MPa, non-destructive surface inspection was carried out after water discharge, no cracks were found.
[Example 2·Multiple choice question] Under normal circumstances, the standards for passing the container water pressure test are ().
A. No settlement of foundation
B. No visible deformation
C. No leakage
D. 100% magnetic powder on the surface detection without cracks
E. No abnormal sound during the test
[Answer] BCE
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